Let's say you biked as fast as you can at 17.6. 2 hrs later, you would have bike for 2*17.6 miles=35.2 miles. (d=rt) That means that your distance can be no greater than 35.2 and it can be no less than 0 because you can't bike a negative distance like -5 miles. So your inequality would be 0≤ d ≤35.2 where your d is distance